For the second coil
From GlueXWiki
To-do list
- Wiring
- remove jumper box and cables and bring to F117 for rework - done
- remove current-limiting resistor boxes, bring to F117 for rework - done
- minimize summed coil voltage readouts, do most sums in PLC - done
- add separate readouts of splice and vapor-cooled lead voltages - done
- combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller
- match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors - done
- read out voltage taps for quench detection and DAQ using separate resistor chain - done
- update wiring diagrams to "as built"
- get diagrams and spec sheets to Fernando - done
- understand signal clipping and interaction between readout modules, test and replace if necessary
- minimize noise
- Danfysik power supply
- understand ramp-down mechanism - done
- measure fast dump resistors in power supply - done
- eliminate 2V DC offset - done
- fix slow dump - done
- implement ground fault detection compatible with quench detector
- make more copies of full Danfysik power supply manual (get from Steve L)
- Danfysik quench detector
- match and balance resistors - done
- install test points for gain/offset tuning - done
- install pots for balance
- install bias circuit if unable to eliminate Danfysik DC offset - not needed
- doesn't appear to be needed since offset problem solved
- Dataforth system
- Correct for 2M Ohm internal impedance and 200k Ohm resistors in voltage tap readouts
- USB device
- install voltage dividers to extend voltage range
- add resistors to Zener protection circuit
- automated elog entries
- automatically dump screens to files
- create perl script
- create cron job
- A-B HMI improvements
- get additional HMI client license from Steve
- get second HMI computer working
- implement A-B license server - done
- get A-B IIS file server system working - done
- upgrade to 100 screen license if needed
- change HMI database to MySql - done
- create more pre-defined trend plots
- simplify existing screens
- better indication of what caused fast/slow dump
- A-B PLC program improvements
- new channels
- simplify many operations
- improve PLC early problem detection
- improve PLC cryo control under varying CTF operating conditions
- implement early-warning quench/overvoltage detection in PLC
- use custom instructions to simplify code
- EPICS
- serve out all PLC channels to CA
- need list from Josh
- implement guard shack notification for IOC hang/crash
- serve out all PLC channels to CA
- improve cryo system
- minimize ice buildup
- more heating/insulation on N2 vent line
- can we calibrate the C-glass sensors somehow?
For the hall
- UPS on Danfysik boards and contactor
- may implement active isolation depending on test results
- max ramp rate in the hall is 10V / 20H = 0.5 A/sec
- do we need additional valves, check valves, bypasses, whatever?
- do we need Dataforth voltage attenuators on coil tap channels?
Basic questions
- what is causing blockage in vapor-cooled lead?
- broken valve!
- lag between field and current...are there turn-to-turn shorts in coil 1?
- maybe short, maybe eddy currents
- what worked, what didn't for coil 1?
- what should we do differently for the next coil?
- will we open up coils 3 and 4?
- what might we consider doing differently in the hall?
- do we want an independent review of our fast (and slow) dump strategy and system?
- have we documented our experience?
- sub-coil inductances
- measure with inductance meter on the platform
- inductance seen on splices